Anderson, Carl D. and Millikan, R. A. and Neddermeyer, Seth and Pickering, William (1934) The Mechanism of Cosmic-Ray Counter Action. Physical Review, 45 (6). pp. 352-363. ISSN 0031-899X. doi:10.1103/PhysRev.45.352. https://resolver.caltech.edu/CaltechAUTHORS:ANDpr34a
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Abstract
A study of photographs taken in a very powerful magnetic field with the aid of a cloud chamber activated by counter responses shows (1) that such an arrangement has a strong selective action on showers; (2) that showers so selected have an exceptional multiplicity of tracks; (3) that the two counters show simultaneous responses when no single particle can pass through both of them; (4) that in general these showers consist of a mixture of positive and negative electrons rather than of electrons and protons, no effects certainly attributable to neutrons being observed; (5) that these electrons in getting out of the nucleus some times produce an intense photon spray of the nature of "brems strahlung"; (6) that these photon sprays are increasingly responsible for the simultaneous activation of the two counters the thicker the intervening lead; (7) that a light element like carbon has little effect in producing either showers or sprays; (8) that the total energy of a shower is not larger than that of single electrons (+ or -); (9) that the Dirac theory encounters certain difficulties in accounting for the observed effects.
Item Type: | Article | ||||||
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Additional Information: | ©1934 The American Physical Society Received 26 December 1933 | ||||||
Issue or Number: | 6 | ||||||
DOI: | 10.1103/PhysRev.45.352 | ||||||
Record Number: | CaltechAUTHORS:ANDpr34a | ||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:ANDpr34a | ||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
ID Code: | 6774 | ||||||
Collection: | CaltechAUTHORS | ||||||
Deposited By: | Archive Administrator | ||||||
Deposited On: | 21 Dec 2006 | ||||||
Last Modified: | 08 Nov 2021 20:36 |
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